Question: Consider the following time series data. Week 1 2 3 4 5 6 Value 18 14 17 12 18 13 Using the average of all

Consider the following time series data.

Week 1 2 3 4 5 6
Value 18 14 17 12 18 13

Using the average of all the historical data as a forecast for the next period, compute the following. (Round your answers to two decimal places.)

(a) mean absolute error MAE = 2.98

(b) mean squared error MSE = 10.24

(c) mean absolute percentage error MAPE =

(d)What is the forecast for week 7?

I have provided correct answers for parts a and b. Please show on excel how to calculate all parts. Show formulas

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